Noise-Induced Phase Transitions
Phase transitions constitute one of the most interesting features exhibited by spatially extended systems. This chapter analyzes the effect of noise on phase transitions taking place between different steady states of a system. As we will see, noise can affect preexisting phase transitions, or even induce new ones. Three different situations will be considered, corresponding to different kinds of stochastic contributions: pure additive noise, both additive and multiplicative noises, and pure multiplicative noise. There is evidence enough in favor of most of these transitions being second-order. However, a comment will also be made on noise effects on first-order phase transitions.
KeywordsCritical Exponent Additive Noise Noise Intensity Linear Stability Analysis Universality Class
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